Computer Science: A Structured Programming Approach Using C1 11-7 A Programming Example— Morse...

Computer Science: A Structured Programming Approach Using C 1

11-7 A Programming Example— Morse CodeMorse code, patented by Samuel F. B. Morse in 1837, Morse code, patented by Samuel F. B. Morse in 1837, is the language that was used to send messages by is the language that was used to send messages by telegraph from the middle of the nineteenth century telegraph from the middle of the nineteenth century until the advent of the modern telephone and today’s until the advent of the modern telephone and today’s computer controlled communications systems. In this computer controlled communications systems. In this section, we use a C program to convert English to section, we use a C program to convert English to Morse and Morse to English. Morse and Morse to English.

Computer Science: A Structured Programming Approach Using C 2

Table 11-3 Morse Code

Computer Science: A Structured Programming Approach Using C 3

FIGURE 11-26 Character to Morse Code Structure

Computer Science: A Structured Programming Approach Using C 4

FIGURE 11-27 Morse Code Menu

Computer Science: A Structured Programming Approach Using C 5

FIGURE 11-28 Morse Code Program Design

Computer Science: A Structured Programming Approach Using C 6

PROGRAM 11-18 Morse Code: main

Computer Science: A Structured Programming Approach Using C 7

PROGRAM 11-18 Morse Code: main

Computer Science: A Structured Programming Approach Using C 8

PROGRAM 11-18 Morse Code: main

Computer Science: A Structured Programming Approach Using C 9

PROGRAM 11-18 Morse Code: main

Computer Science: A Structured Programming Approach Using C 10

PROGRAM 11-18 Morse Code: main

Computer Science: A Structured Programming Approach Using C 11

PROGRAM 11-18 Morse Code: main

Computer Science: A Structured Programming Approach Using C 12

PROGRAM 11-19 Morse Code: Menu

Computer Science: A Structured Programming Approach Using C 13

PROGRAM 11-19 Morse Code: Menu

Computer Science: A Structured Programming Approach Using C 14

PROGRAM 11-20 Morse Code: Get Input

Computer Science: A Structured Programming Approach Using C 15

PROGRAM 11-20 Morse Code: Get Input

Computer Science: A Structured Programming Approach Using C 16

PROGRAM 11-21 Morse Code: Print Output

Computer Science: A Structured Programming Approach Using C 17

PROGRAM 11-22 Morse Code: Encode to Morse

Computer Science: A Structured Programming Approach Using C 18

PROGRAM 11-22 Morse Code: Encode to Morse

Computer Science: A Structured Programming Approach Using C 19

PROGRAM 11-23 Morse code: Decode to English

Computer Science: A Structured Programming Approach Using C 20

PROGRAM 11-23 Morse code: Decode to English

Computer Science: A Structured Programming Approach Using C 21

PROGRAM 11-24 Morse Code: Convert Codes

Computer Science: A Structured Programming Approach Using C 22

PROGRAM 11-24 Morse Code: Convert Codes

Computer Science: A Structured Programming Approach Using C 23

11-8 Software Engineering

In this section, we’ve formalized some of the principles In this section, we’ve formalized some of the principles of good programming that we’ve discussed throughout of good programming that we’ve discussed throughout the text. Although you will find little in this discussion the text. Although you will find little in this discussion of software engineering that relates directly to the of software engineering that relates directly to the subject of strings, all of the string functions have been subject of strings, all of the string functions have been written using the principles discussed on the following written using the principles discussed on the following pages.pages.

Program Design ConceptsInformation HidingCohesion

Topics discussed in this section:Topics discussed in this section:

Computer Science: A Structured Programming Approach Using C 24

FIGURE 11-29 Types of Cohesion

Computer Science: A Structured Programming Approach Using C 25

FIGURE 11-30 Example of Functional Cohesion

Computer Science: A Structured Programming Approach Using C 26

ALGORITHM 11-1 Process Inventory Pseudocode

Computer Science: A Structured Programming Approach Using C 27

Well-structured programs are highly cohesive and loosely coupled.

NoteNote

Computer Science: A Structured Programming Approach Using C 28

ALGORITHM 11-2 Process List Pseudocode